Fiberglass roofing tissue is mainly used as a substrate for bitumen water proof membrane, which has the characteristics of corrosion resistance, high strength, good wood resistance, good dimensional stability, high porosity, easy to be impregnated with asphalt, etc. The addition of reinforcing yarn increases the longitudinal strength and tear resistance of the tissue. The bitumen water proof membrane made of fiberglass roofing tissue can not only overcome the shortcomings of low temperature brittle cracking, high temperature flowing, easy aging cracking, rot and leakage, but also has high strength, uniformity and weather resistance. Excellent in properties, good anti-leakage, simple production process and prolonged service life. It is an ideal substrate for roofing waterproofing membranes, asphalt shingles and other materials. Fiberglass roofing tissue can also be used as insulation for houses. The underlay material protects the polymer insulation foam from the solvent in the asphalt, thereby extending the life of the insulation layer.